2013 2(13)

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Pages:

56 - 59

Language:

RU

Ref.:

6


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2013_2(13)_10.pdf

 

 

INVESTIGATION OF EFFICIENCY OF THERMODYNAMIC CYCLES WITH STEPPED COMPRESSION USING THE NON-AZEOTROPIC REFRIGERANTS

Mezentseva N.N., Mezentsev I.V.

Institute of Thermophysics SB RAS, Novosibirsk, Russia


Citation:

Mezentseva, N.N. and Mezentsev, I.V., (2013) Investigation of efficiency of thermodynamic cycles with stepped compression using the non-azeotropic refrigerants, Modern Science: Researches, Ideas, Results, Technologies, Iss. #2(13), PP. 56 - 59.


Keywords:

heat pump; non-azeotropic refrigerants; thermodynamic cycle; coefficient of energy transformation


Abstracts:

The thermodynamic cycles of vapor-compression heat pumps with single- and two-stage compression are considered in this work. Non-azeotropic mixtures refrigerants R32/R152а (30/70%), R32/R134а (30/70%) and R32/R125/R134а (23/25/52%) were used as the actuating media. The coefficient of energy transformation was taken as the efficiency criterion of the thermodynamic cycle. While comparing cycles with overheating and supercooling of refrigerant vapors with the cycles without additional overheating, it was shown that application of cycles with overheating and supercooling is more reasonable because additional heating of refrigerant before the compression excludes the possibility of wet vapor compression. The advantage of the two-stage compression cycle over the single-stage processes is shown. The values of energy transformation coefficients for the binary mixtures R32/R134а and R32/R152а are 5 - 13 % higher than those for the three-component mixture R32/R125/R134а in all studied cycles.


References:

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